SANITARY EARTHENWARE PRODUCTS AND PROCESS FOR PRODUCING THE SAME

Title:

SANITARY EARTHENWARE PRODUCTS AND PROCESS FOR PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/1999/061392

Kind Code:

A1

Abstract:

Sanitary earthenware products having a controlled glaze surface, being scarcely soiled, having a high durability or being excellent in gloss. Among these products, one of the first type has a surface graze layer formed on the uncoated earthenware face and the average center-line roughness (Ra) of the surface graze layer is less than 0.07 $g(m)m. This product is favorable in that it is scarcely soiled and stains once adhered thereto, if any, can be washed away by slightly flushing. A product of the second type is one provided with a surface graze layer formed on the uncoated earthenware face and the surface graze layer has a kurtosis (Rku) of less than 2.70. This product is favorable in having a highly excellent surface gloss. A product of the third type is one provided with a surface graze layer formed on the uncoated earthenware face and the surface of the surface graze layer is substantially made of glassy components and no silica grains of 10 $g(m)m or above in grain diameter is observed on the surface. This product is favorable in being scarcely soiled.

Inventors:

MACHIDA MITSUYOSHI (JP)
HAYASHI KOICHI (JP)
ISHIBASHI HIROTAKA (JP)
ICHIKI TOMOYASU (JP)
ITO MASAAKI (JP)
ANDO MASAMI (JP)
KITAMURA ATSUSHI (JP)
AOSHIMA TOSHIHIRO (JP)
KAWAKAMI KATSUHIRO (JP)
HORIUCHI SATOSHI (JP)
HAYAKAWA MAKOTO (JP)

Application Number:

PCT/JP1999/002810

Publication Date:

December 02, 1999

Filing Date:

May 27, 1999

Export Citation:

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Assignee:

TOTO LTD (JP)
MACHIDA MITSUYOSHI (JP)
HAYASHI KOICHI (JP)
ISHIBASHI HIROTAKA (JP)
ICHIKI TOMOYASU (JP)
ITO MASAAKI (JP)
ANDO MASAMI (JP)
KITAMURA ATSUSHI (JP)
AOSHIMA TOSHIHIRO (JP)
KAWAKAMI KATSUHIRO (JP)
HORIUCHI SATOSHI (JP)
HAYAKAWA MAKOTO (JP)

International Classes:

E03D11/02; B44F11/06; C04B33/34; C04B41/50; C04B41/86; C04B41/89; E03D9/00; (IPC1-7): C04B41/86

Foreign References:

JPH05262581A	1993-10-12
JPH04349144A	1992-12-03
JPS5782142A	1982-05-22

Other References: